Method and device for channel information feedback

1. A method for channel information feedback, comprising:

sending, by a first beamformer, a first channel measuring frame to a first beamformee in a same basic service set and a second beamformee in a different basic service set, wherein the first beamformer is associated with the first beamformee to form the same basic service set, and a second beamformer is associated with the second beamformee to form the different basic service set; and

sending, by the first beamformer, order indicating information, so that the second beamformer sends a second channel measuring frame used for obtaining channel information according to an order specified by the order indicating information, wherein the first beamformer is a primary beamformer, the order indicating information indicates that the second beamformer starts sending the second channel measuring frame after a previous beamformer completes an execution of sending a channel measuring frame; and

receiving, by the first beamformer, first channel feedback information from the first beamformee, and second channel feedback information from the second beamformee,

wherein the first channel feedback information is obtained by the first beamformee performing channel estimation according to the first channel measuring frame and the second channel measuring frame, and the first channel feedback information comprises: channel information related to the first beamformer and channel information related to the second beamformer, the second channel feedback information is obtained by the second beamformee performing channel estimation according to the first channel measuring frame and the second channel measuring frame, and the second channel feedback information comprises: channel information related to the first beamformer and channel information related to the second beamformer.

2. The method according to claim 1 , further comprising:

sending, by the first beamformer, a data packet sending end identifier, wherein the data packet sending end identifier is used for informing a beamformee that all other beamformers have sent a channel measuring frame.

3. The method according claim 1 , wherein the order indicating information is carried in the first channel measuring frame.

4. The method according claim 1 , further comprising:

sending, by the first beamformer, frequency indicating information to beamformees, so that beamformees feed back information at frequencies indicated by the frequency indicating information.

5. A method for channel information feedback, comprising:

receiving, by a first beamformee, a first channel measuring frame sent by a first beamformer;

sending, by the first beamformee, order indicating information to a second beamformer, so that the second beamformer sends a second channel measuring frame according to an order specified by the order indicating information, the order indicating information indicates that the second beamformer starts sending the second channel measuring frame after a previous beamformer completes an execution of sending a channel measuring frame;

receiving, by the first beamformee, the second channel measuring frame sent by the second beamformer, wherein the first beamformee is associated with the first beamformer to form a same basic service set, and a second beamformee is associated with the second beamformer to form a different basic service set;

performing, by the first beamformee, channel estimation to obtain first channel feedback information according to the first channel measuring frame and the second channel measuring frame; and

sending, by the first beamformee, the first channel feedback information to the first beamformer, wherein the first channel feedback information comprises: channel information related to the first beamformer in the same basic service set and channel information related to the second beamformer in the different basic service set.

6. The method according to claim 5 , further comprising:

determining, by the first beamformee, that the received channel measuring frame is sent by a last beamformer indicated in the order indicating information.

7. The method according to claim 6 , wherein the determining, by the first beamformee, that the received channel measuring frame is sent by the last beamformer indicated in the order indicating information, comprises:

comparing, by the first beamformee, a beamformer indentifier corresponding to the received channel measuring frame with the order indicating information, and determining that the beamformer is the last beamformer.

8. The method according to claim 5 , wherein the sending, by the first beamformee, the first channel feedback information to the first beamformer, comprises:

sending, by the first beamformee, the first channel feedback information to a primary beamformer.

9. The method according claim 5 , wherein the order indicating information is carried in the channel information related to the first beamformer.

10. A beamformer, comprising:

a processor; and

a non-transitory computer-readable storage medium comprising computer-executable instructions that, when executed by the processor, facilitate executing a method comprising the steps:

sending a first channel measuring frame to a first beamformee in a same basic service set and a second beamformee in a different basic service set, wherein the beamformer is associated with the first beamformee to form the same basic service set, and a second beamformer is associated with the second beamformee to form the different basic service set;

sending, by the first beamformer, order indicating information, so that the second beamformer sends a second channel measuring frame used for obtaining channel information according to an order specified by the order indicating information, wherein the first beamformer is a primary beamformer, the order indicating information indicates that the second beamformer starts sending the second channel measuring frame after a previous beamformer completes an execution of sending a channel measuring frame; and

receiving first channel feedback information from the first beamformee, and second channel feedback information from the second beamformee, wherein the first channel feedback information is obtained by the first beamformee performing channel estimation according to the first channel measuring frame and the second channel measuring frame, and the first channel feedback information comprises: channel information related to the beamformer and channel information related to the second beamformer, the second channel feedback information is obtained by the second beamformee performing channel estimation according to the first channel measuring frame and the second channel measuring frame, and the second channel feedback information comprises: channel information related to the beamformer and channel information related to the second beamformer.

11. The beamformer according to claim 10 , wherein the storage medium further comprises steps for:

sending a data packet sending end identifier, wherein the data packet sending end identifier is used for informing a beamformee that all other beamformers have sent a channel measuring frame.

12. A beamformee, comprising:

a processor; and

a non-transitory computer-readable storage medium comprising computer-executable instructions that, when executed by the electronic processor hardware, facilitate executing a method comprising the steps:

receiving a first channel measuring frame sent by a first beamformer;

sending order indicating information to a second beamformer, so that the second beamformer sends a second channel measuring frame according to an order specified by the order indicating information, the order indicating information indicates that the second beamformer starts sending the second channel measuring frame after a previous beamformer completes an execution of sending a channel measuring frame;

receiving the second channel measuring frame sent by the second beamformer, wherein the beamformee is associated with the first beamformer to form a same basic service set, and a second beamformee is associated with the second beamformer to form a different basic service set;

performing channel estimation to obtain first channel feedback information according to the first channel measuring frame and the second channel measuring frame; and sending the first channel feedback information to the first beamformer, wherein the first channel feedback information comprises: channel information related to the first beamformer in the same basic service set and channel information related to the second beamformer in the different basic service set.

13. The beamformee according to claim 12 , wherein the storage medium further comprises steps for:

determining that the received channel measuring frame is sent by a last beamformer indicated in the order indicating information before the information sending unit sends the channel feedback information to the beamformer.

14. The beamformee according to claim 13 , wherein the storage medium further comprises steps for: comparing a beamformer indentifier corresponding to the received channel measuring frame with the order indicating information, and determine that the beamformer is the last beamformer.

15. The beamformee according to claim 12 , wherein the storage medium further comprises steps for: sending the first channel feedback information to a primary beamformer.